Trimleston Or Owenstown
Townland in the civil parish of Taney, barony of Rathdown, Co. Dublin; in Irish Baile Eoghain
- Area
- 30.5 ha
- 75 acres
- Land parcels
- 234
- registered freehold, median 304 m²
- Zoning
- R2
- Objective A
- Planning
- 100
- applications since 2010
Land parcels
Registered freehold land, Tailte Éireann
234 registered freehold parcels lie mostly in Trimleston Or Owenstown, from 5 m² to 6,195 m² (0.62 ha, 1.53 acres). The dashed line is the townland's boundary; 36 neighbouring parcels touch it.
Download the townland: DXF, in Irish Transverse Mercator metres, with its boundary, parcels and buildings; GeoJSON or KML.
Zoning
Development plans, national zoning
- R2Objective A (Existing residential)
COUNTY DEVELOPMENT PLAN 2022-2028, Dun Laoghaire-Rathdown · 264 parcels The zoning objective in the plan - M3Objective NC (District, neighbourhood centre)
COUNTY DEVELOPMENT PLAN 2022-2028, Dun Laoghaire-Rathdown · 1 parcels The zoning objective in the plan - R2Z1: Sustainable Residential Neighbourhoods (Existing residential)
Development Plan 2022-2028, Dublin · 1 parcels The zoning objective in the plan - G1Objective F (Open space, park)
COUNTY DEVELOPMENT PLAN 2022-2028, Dun Laoghaire-Rathdown · 0 parcels The zoning objective in the plan - G5Z9: Amenity/Open Space Lands/Green Network (Mixed/general 'green'/recreation/conservation, other)
Development Plan 2022-2028, Dublin · 0 parcels The zoning objective in the plan
Source: Tailte Éireann and the Department of Housing (MyPlan), national zoning, CC BY 4.0.
Planning applications
Sites that touch the townland, newest first
27 Aug 2026Assessment period
Retention permission for hip to gable non habitable attic conversion; single sto
Permission for retention · Dun Laoghaire Rathdown County Council, D26A/0642/WEB
12 Aug 2026Assessment period
Conversion of existing attic space comprising of modification of existing roof
Permission · Dun Laoghaire Rathdown County Council, D26B/0450/WEB
24 Jul 2026Assessment period
Demolition of existing garage at the side, construction of a two storey, pitche
Permission · Dun Laoghaire Rathdown County Council, D26B/0424/WEB
3 Jul 2026Declare application invalid
Construction of a single-storey porch to the side, a two storey, pitched roof e
Permission · Dun Laoghaire Rathdown County Council, D26B/0385/WEB
24 Jun 2026Grant permission
A 26.5sqm. first floor extension to the side of the existing house requiring a
Permission · Dun Laoghaire Rathdown County Council, D26A/0472/WEB
4 Jun 2026S5 dec exempt
Installation of single roof window (Velux type) measuring approx 940mm x 1600mm
Section 5 · Dun Laoghaire Rathdown County Council, REF8626
25 May 2026Refuse permission for retention
A roofed storage area to side and slightly beyond the front facade
Permission for retention · Dun Laoghaire Rathdown County Council, D26B/0306/WEB
22 May 2026Grant permission
•Demolition of the existing single storey extension to the side, demolition of h
Permission · Dun Laoghaire Rathdown County Council, D26B/0303/WEB
9 Apr 2026S5 dec exempt
Proposed development consists of the installation of external wall insulation to
Section 5 · Dun Laoghaire Rathdown County Council, REF5426
7 Apr 2026Grant permission
The development will consist of:1. Demolition of single storey shed to the rear,
Permission · Dun Laoghaire Rathdown County Council, D26B/0209/WEB
7 Apr 2026Grant permission
The Development will consist of - The construction of a two-storey extension to
Permission · Dun Laoghaire Rathdown County Council, D26B/0211/WEB
1 Apr 2026Grant permission
Alterations and additions to an existing 2-storey detached dwelling comprising o
Permission · Dun Laoghaire Rathdown County Council, D26A/0254/WEB
9 Feb 2026Grant permission
a) single storey extension to rear of existing dwelling with rooflights; b) exis
Permission · Dun Laoghaire Rathdown County Council, D26A/0074/WEB
7 Jan 2026Grant permission
Permission is sought for the secondary use of 179 No. permitted and operational
Permission · Dun Laoghaire Rathdown County Council, D26A/0004/WEB
19 Dec 2025Grant permission
The development will consist of: •Alterations to previously permitted dormers (F
Permission · Dun Laoghaire Rathdown County Council, D25B/0724/WEB
3 Dec 2025S5 req ai
New 900mm wide, 1.6m high gate to the rear garden. From rear laneway establishe
Section 5 · Dun Laoghaire Rathdown County Council, REF18925
19 Nov 2025Grant permission
The development will consist of: (1) removal of existing guard hut and construc
Permission · Dun Laoghaire Rathdown County Council, D25A/0883/WEB
23 Oct 2025Grant permission
Planning permission for attic conversion with extended ridgeline to side from hi
Permission · Dun Laoghaire Rathdown County Council, D25B/0601/WEB
10 Oct 2025S5 dec exempt
Installation of a rendered external wall insulation system.
Section 5 · Dun Laoghaire Rathdown County Council, REF16325
29 Sept 2025Grant permission
The development will consist of the provision of a roof terrace on the flat roof
Permission · Dun Laoghaire Rathdown County Council, D25B/0538/WEB
13 Sept 2025Declare invalid (site notice)
Planning permission for attic conversion with extended ridgeline to side from hi
Permission · Dun Laoghaire Rathdown County Council, D25B/0502/WEB
9 Jul 2025Grant permission
The development will consist of: • Construction of no.1 dormer to rear and no.2
Permission · Dun Laoghaire Rathdown County Council, D25B/0390/WEB
3 Jul 2025Grant permission
Retention permission for amendments to a previously approved planning permissio
Permission for retention · Dun Laoghaire Rathdown County Council, D25B/0371/WEB
12 Jun 2025Grant permission
Beer, wine, spirits retail off licence subsidiary to main retail use.
Permission · Dun Laoghaire Rathdown County Council, D25A/0465/WEB
28 May 2025S5 dec not exempt
Proposed new 900mm Wide, 1.6m High gate. New Pier to match existing.
Section 5 · Dun Laoghaire Rathdown County Council, REF9725
The 25 most recent of over 100 applications.
Source: National Planning Applications, Department of Housing, Local Government and Heritage, CC BY 4.0. Applicants are not shown.
Nature and heritage
Designated sites and recorded monuments
Designated sites
No designated site (Special Area of Conservation, Special Protection Area, Natural Heritage Area or proposed one) touches the townland of Trimleston Or Owenstown.
Recorded monuments
No recorded monument lies in the townland of Trimleston Or Owenstown.
Architectural heritage
No building of the National Inventory of Architectural Heritage stands in the townland of Trimleston Or Owenstown.
Designated sites: National Parks and Wildlife Service. Recorded monuments: Sites and Monuments Record, National Monuments Service. Buildings: National Inventory of Architectural Heritage. Department of Housing, Local Government and Heritage, CC BY 4.0. Works at or in relation to a recorded monument need two months' written notice to the National Monuments Service (National Monuments (Amendment) Act 1994, section 12).
Ground and risks
Radon, landslides, flooding
- Radon
- About 1 in 20 homes in this area is likely to have high radon levels. Testing a home
- Landslides
- Susceptibility low, on the 1:50,000 map.
- Flooding
- The flood maps of the Office of Public Works: floodinfo.ie.
Radon Risk Map of Ireland, Environmental Protection Agency; Landslide Susceptibility Classification, Geological Survey Ireland; both CC BY 4.0.
Homes sold
Property Price Register
No address of the register names Trimleston Or Owenstown with five sales or more. The sales of the area are on the page of Co. Dublin.
The townland
- Name
- Trimleston Or Owenstown · Baile Eoghain
- Area
- 304,935 m² (30.49 ha, 75.35 acres)
- Civil parish
- Taney, and its townlands
- Barony
- Rathdown
- Electoral division
- Blackrock-Glenomena, the unit of the census
- Neighbouring townlands
- Booterstown, Intake, Merrion, Mount Merrion Or Callary, Priesthouse, Roebuck
- Placenames
- Trimleston Or Owenstown on logainm.ie, the Placenames Database of Ireland
Townlands, civil parishes, baronies and electoral divisions, National Statutory Boundaries, Tailte Éireann, CC BY 4.0. A townland is the smallest land division of Ireland, and the unit of a rural address; old registers such as the 1901 and 1911 censuses file it under its civil parish and barony.